решите производную
y= (1/4)^2x-1 1/4 в степени 2х-1

У'= (1/4)^(2х)·(2х)'·ln(1/4) - (5/4)^(2 x -1)·(2 x-1)'·ln(5/4) = 2(1/4)^(2 x)·ln(1/4) - 2(5/4)^(2 x-1)·ln(5/4).